Safety-valve for lamps



(No Model.)

A. P. ODELL.

Safety Valve for Lamps.

No. 236,614. Patented Jam", I88].

A. 1? ll: i ii 77225155535, fiVefi/QF ca/Qlaw NPETERS,PNOTO-UTHOGRAPHER. WASHINGTON, n C,

UNITED STATES PATENT OFFICE.

ALBERT P. ODELL, OF BRADFORD, PENNSYLVANIA.

SAFETY-VALVE FOR LAM PS.

SPECIFICATION forming part of Letters Patent No. 236,614, dated January11, 1881.

Application filed December 8, 1880. (No model.)

To all whom tt may concern:

Be it known that I, ALBERT P. ODELL, of Bradford, in the county ofMcKean and State of Pennsylvania, have invented certain new and usefulImprovements in Safety-Valvesfor Lamps; and ldo hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawing, whichforms part of this specification.

My invention relates to an improvement in safety-valves for lamps; andit consists in attaching the valve directly to the wick-tube, andplacing a spiral spring around the wicktube, between the valve and theair-distributer, so as to keep the valve always pressed downward, aswill be more fully described hereinafter.

The object of my invention is to provide a safety-valve attachment forlamps, so that in case the gas should collect in the lamp-bowl andexplode the exploding gas will be allowed to escape through the valve,and do no other harm than simply to put out the light.

The accompanying drawing represents a vertical section of a lamp-burnerembodying my invention.

A represents alamp-burner of any desired shape, size, or construction,and which has the bottom part of the burner entirely open, instead ofbeing closed, as is generally the case. Secured to the wick-tube is thecircular valve 0, which is sufficiently wide to serve as a cover for allthat part of the burner which is immediately above the screw-thread D,and which valve, together with the wick-tube, has a sufficient verticalplay, as shown by dotted lines, to allow a free escape for all explosivegas which may have accumulated in the lampbowl. The wick-tube E, insteadof being soldered to the air-distributer G, as is generally the case,here simply passes through the same, without being in any wise fastenedto it, so that this tube can have a vertical play sufficient to raisethe valve above its seat. Passed around this wick-tube, and bearingagainst the air-distributer at one end and the valve at the other, isthe spiral spring I, which serves to hold the spring pressed tightlydown upon its seat until a sufficient force is applied against thebottom of the valve to raise it upward. In order to allow the wick-tubeto rise upward, long slots are cut vertically in its sides, where thewick-raisers pass through it, so that when the tube does rise thestationary wick-raisers will form no impediment to its motion.

In case an explosion should take place the force of the gas lifts thevalve above its seat,

and then the gas rscapes freely around the edge of the valve before thegas can break or injure the lamp in any way, and then the valve snapsback into position again and extinguishes all flame.

WVhere there is no attachment to the lamp for the purpose of allowingthe gas to escape in case of an explosion, when the explosion takesplace the lamp-bowl is shattered, the oil takes fire, and is scatteredover the floor and all surrounding objects.

Having thus described my invention, I claim- The combination, in alampburner, of the vertically-moving safety-valve O, the Wick-tube E,spring I, and air-distributer G, the parts being arranged to operatesubstantially as shown.

In testimony that I claim the foregoing I have hereunto set my hand this7th day of December, 1880.

ALBERT P. ()DELL.

Witnesses:

W. W. lVIORTIMER, A. C. KISKADDEN.

